Correlation between giant magnetoresistance and magnetic interactions in a CoAg multilayered/granular system
作者:
A. D. C. Viegas,
J. Geshev,
L. F. Schelp,
J. E. Schmidt,
期刊:
Journal of Applied Physics
(AIP Available online 1997)
卷期:
Volume 82,
issue 5
页码: 2466-2471
ISSN:0021-8979
年代: 1997
DOI:10.1063/1.366058
出版商: AIP
数据来源: AIP
摘要:
Magnetizing, demagnetizing, and remanent magnetization curves for[Co(12 Å)/Ag(60 Å)]×15multilayered/granular films thermally treated have been measured. The changes of the giant magnetoresistance and the interaction effects have been explained as a result of the structural, morphological, and magnetic evolution of the samples as a function of the thermal treatment. It has been inferred that for samples annealed at temperatures lower than 360 °C, the changes of the giant magnetoresistance come from the misalignment of the magnetic moments of the Co particles formed during annealing. A strong correlation between the giant magnetoresistance and the magnetic interaction effects has been found for samples annealed at temperatures higher than 360 °C: the giant magnetoresistance is degraded as the demagnetizing interparticle interactions are increased. ©1997 American Institute of Physics.
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